Air Buffer Pad Size (In.) 3 Pad Size 3 In. Free Speed (RPM) 2400 Spindle Size 1/4 In.-20 Free Speed 2400 rpm 4.50 Average CFM @ 15 Second Run Time Required Pressure (PSI) 90 18.0 CFM @ Full Load Required Pressure 90 psi Air Inlet NPT (In.) 1/4 Min Hose (In.) 1/4 Air Inlet 1/4 in NPT Length (In.) 5-3/8 Min Hose Size 1/4 In. Spindle Size (In.) 1/4-20 Overall Length 5-3/8 In. Throttle Lever Composite Handle Composite Handle Material Rear Exhaust